21181920

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{44129}}^1$

素因数の和:44147

約数の個数: 48

約数和(自身を含む): 66724560

約数和(自身を除く): 45542640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 240, 480, 44129, 88258, 132387, 176516, 220645, 264774, 353032, 441290, 529548, 661935, 706064, 882580, 1059096, 1323870, 1412128, 1765160, 2118192, 2647740, 3530320, 4236384, 5295480, 7060640, 10590960, 21181920]

約数ペア:

[(1, 21181920), (2, 10590960), (3, 7060640), (4, 5295480), (5, 4236384), (6, 3530320), (8, 2647740), (10, 2118192), (12, 1765160), (15, 1412128), (16, 1323870), (20, 1059096), (24, 882580), (30, 706064), (32, 661935), (40, 529548), (48, 441290), (60, 353032), (80, 264774), (96, 220645), (120, 176516), (160, 132387), (240, 88258), (480, 44129)]